I like to say he is America's Id made manifest.

It will be difficult for someone else to do, because Trump also didn't actually do anything himself to become the representative of the idiots. Remembering how surprised he was to win in 2016, it only happened because the idiots didn't want to vote for a woman. He basically tripped and fell into the role.

It's difficult to tell if the MAGA crowd will silently retreat to not voting again, or if they'll agree on some random celebrity again, but I don't think anyone can put themselves in that kind of position of representing people who hates having a representative at all.

I feel like you just jinxed us with a Joe Rogan presidency. WTF, dude.

There might very well still have been something else bad. The discontent was there, if hitler hadn't been the one to utilize it, it could've been someone else. Same with trump. There's still a good chance that whoever would win the power struggle if the orange suddenly croaked had none of the apparent charisma of trump (not that I think he has any but it clearly works on a lot of people). Fascism is a personality cult, and just replacing that isn't a given, but the initial rise heavily selects for someone who is able to create one. So if not them, it'd likely have been someone else maybe a little later.